These two pages are representative of the MASSIVE vocab we are wading through in my AP Stats class today. I snapped a couple of pics as I was walking the classroom answering questions. It was a successful day, I think. …. Maybe.
I finalized a diagram I had in my head and that I have drawn by hand several times over the last couple of years.
That reminds me of a quote I read today:
All models are wrong. Some models are useful. — George Box
— Stat Fact (@StatFact) August 18, 2014
Anyway, I took the learners through my short ppt on the theory behind the journey we are starting. After that, they had to start looking up the vocab in the textbook and start developing the definitions for the 8 types of sampling, the 4 types of bias, and the other vocab associated with sampling.
Next up, the sharing of the vocab they found (which will all be the same, they all figured out how to use the book quickly). I will do that quickly, answer questions, and immediately move to “On the River” exercise. More on that later.
I was really struck today by the different ways the classes jumped into this exercise. Period 2 was very helpful to each other. They started discussing the vocab right away and were very animated. By contrast, Period 3 was silent. I don’t mean they whispered. I mean they were absolutely silent. It really freaked me out. I just wandered around and it took about 20 minutes before they started asking questions. That was highly odd.
By contrast, my 5th period had a table that not only was really thinking, but they determined what stratified sampling was without consulting the book. They asked me if it was legitimate to sample via strata (although they did not use that vocab, it was exactly their question.)
The level of their thinking really impressed me. It was the first day of week 2, and they are naturally coming up with the ideas of stats on their own. Pretty cool.